6556510165 has 8 divisors (see below), whose sum is σ = 7880090328. Its totient is φ = 5237022720.

The previous prime is 6556510151. The next prime is 6556510189. The reversal of 6556510165 is 5610156556.

It can be written as a sum of positive squares in 4 ways, for example, as 2074073764 + 4482436401 = 45542^2 + 66951^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6556510165 - 2¹¹ = 6556508117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1019652 + ... + 1026061.

It is an arithmetic number, because the mean of its divisors is an integer number (985011291).

Almost surely, 2^6556510165 is an apocalyptic number.

It is an amenable number.

6556510165 is a deficient number, since it is larger than the sum of its proper divisors (1323580163).

6556510165 is a wasteful number, since it uses less digits than its factorization.

6556510165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2046359.

The product of its (nonzero) digits is 135000, while the sum is 40.

The square root of 6556510165 is about 80972.2802260131. The cubic root of 6556510165 is about 1871.6483093197.

The spelling of 6556510165 in words is "six billion, five hundred fifty-six million, five hundred ten thousand, one hundred sixty-five".